In case somebody is interested in a mint-condition MAM RS3 Resonator:
http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&category=40732&item=7300490
172&rd=1
The RS3 houses in a single rack space three Korg PS3 bandpass filters
which are controlled by vactrols. The filters can be modulated by 2 LFOs
and/or an envelope follower. The device is mono in/stereo out (the
filters can be panned).
The manufacturer (and the manual) can be found here: www.mam-germany.de
An interesting review is here: http://www.midiwall.com/gear/rs3.html
Current price is ˆ13,50; the auction ends Sunday 18:49 MEZ
Thanks for looking,
Rainer